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mina [271]
3 years ago
11

What do you use to write on a blackboard? ​

Physics
2 answers:
Archy [21]3 years ago
6 0

Answer:

Chalk

Explanation:

please mark as brainliest

Elina [12.6K]3 years ago
4 0

Answer:

Chalk, expo markers. Why?

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Yuliya22 [10]
I believe it would be c
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Question:The greater the
Romashka-Z-Leto [24]

Answer:

True

Explanation:

when the object is larger , the inertia of the object is larger so its tendency to change its state of motion is reduced is reduced.

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3 years ago
A system gains 767 kJ of heat, resulting in a change in internal energy of the system equal to +151 kJ. How much work is done?
Crazy boy [7]

Answer:

The work done on the system is -616 kJ

Explanation:

Given;

Quantity of heat absorbed by the system, Q = 767 kJ

change in the internal energy of the system, ΔU = +151 kJ

Apply the first law of thermodynamics;

ΔU = W + Q

Where;

ΔU  is the change in internal energy

W is the work done

Q is the heat gained

W = ΔU  - Q

W = 151 - 767

W = -616 kJ (The negative sign indicates that the work is done on the system)

Therefore, the work done on the system is -616 kJ

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3 years ago
Water is formed when two hydrogen atoms bond to an oxygen atom. The hydrogen and the oxygen in this example are different
Goryan [66]

They both are two different elements.SO the answer is Element

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3 years ago
An athlete is working out in the weight room. he steadily holds 50 kg above his head for ten seconds which statement is true abo
Andrews [41]
Hi. The answer to your question is the first option.

The athlete isn’t doing any work because he doesn’t move the weight.

Hope this helps :))
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